Nice, glad to see it worked out! Cheers,
/peter neubauer GTalk: neubauer.peter Skype peter.neubauer Phone +46 704 106975 LinkedIn http://www.linkedin.com/in/neubauer Twitter http://twitter.com/peterneubauer http://www.neo4j.org - Your high performance graph database. http://startupbootcamp.org/ - Öresund - Innovation happens HERE. http://www.thoughtmade.com - Scandinavia's coolest Bring-a-Thing party. On Wed, Sep 7, 2011 at 8:12 PM, Nuo Yan <[email protected]> wrote: > > According to this: http://neo4j.org/forums/#nabble-td3248377, I upgraded > to 1.4.1 and the problem goes away. > > I guess there must be a bug in the 1.4.0 REST API that leaks classloader > memory or so, and GC didn't happen as expected in PermGen. Anyways, it looks > great after upgrading to 1.4.1. Memory monitoring graph shows GC happens as > desired in PermGen. > > Thank you! > > On Sep 6, 2011, at 11:30 PM, Nuo Yan wrote: > > > Hey Adriano and everyone, > > > > I finally got a chance to monitor/profile the neo4j process with VisualVM > when I run my set of tests. > > > > It seems that after running the set of tests once, ~ 50M of PermGen was > used. However, subsequent test runs simply multiples that, which worries me > a little. After the fourth run of the tests, ~ 200M of PermGen space was > used. > > > > My app accesses to neo4j completely using the REST interface. During the > test run, new nodes and relationships are being frequently created. There > are batch requests that performs multiple actions at once (number of actions > is reasonable, really small in this case, usually a few, or tenth). There > are also gremlin script executions through REST (send the gremlin query over > to the server through REST API). Most of the gremlin queries are traversals > and returns the vertices or edges match the constraints. > > > > Total number of nodes created during a test run is only hundreds. There > are more relationships, but at most thousands. > > > > That's basically all of the things that are done against neo4j server > during a test run. Given this, do you think the PermGen usage is reasonable? > Or do you think something is very wrong? I worried that setting a larger > PermGen would only postpone but not resolve the OutOfMemory problem. > > > > Let me know if any other info is needed. > > > > Thanks much, > > Nuo > > > > > > > > > > On Aug 29, 2011, at 6:09 AM, Adriano Henrique de Almeida wrote: > > > >> Hi Nuo, any results here? > >> > >> Cheers > >> > >> 2011/8/26 Nuo Yan <[email protected]> > >> > >>> Hey Adriano, > >>> > >>> Thanks very much for your reply. I will try with MaxPermSize. > >>> > >>> It's on my local machine, we are evaluating Neo4j and do not have it on > >>> production yet. I'm accessing the server through the REST APIs, the app > is > >>> separate from Neo. I will see if I can do some profiling on Neo when I > run > >>> my tests. > >>> > >>> Thanks, > >>> Nuo > >>> > >>> > >>> > >>> On Fri, Aug 26, 2011 at 3:53 PM, Adriano Henrique de Almeida < > >>> [email protected]> wrote: > >>> > >>>> Hey Nuo, > >>>> > >>>> wrapper.java.maxmemory and Xmx won't help, since it is a PermGenSpace > >>>> problem, and they only deal with HeapSpace. Did you try with: > >>>> -XX:*MaxPermSize > >>>> **?* > >>>> > >>>> Anyway, something very wrong is happening, since you have few nodes. > >>>> > >>>> It is happening only on production, or development also? If it is > >>> happening > >>>> on development, try to isolate the situation where you're stucking the > >>>> permgen. Run you app with VisualVM, for instance, or any other > profiler. > >>>> Aren't you dealing with classloaders on your app? > >>>> > >>>> Cheers > >>>> > >>>> Adriano Almeida > >>>> > >>>> > >>>> > >>>> 2011/8/26 Jim Webber <[email protected]> > >>>> > >>>>> Hi Nuo, > >>>>> > >>>>> if you're using Neo4j server then you can edit the value in > >>>>> conf/neo-wrapper.conf > >>>>> > >>>>> wrapper.java.maxmemory=1024 > >>>>> > >>>>> Jim > >>>>> _______________________________________________ > >>>>> Neo4j mailing list > >>>>> [email protected] > >>>>> https://lists.neo4j.org/mailman/listinfo/user > >>>>> > >>>> > >>>> > >>>> > >>>> -- > >>>> Adriano Almeida > >>>> Caelum | Ensino e Inovação > >>>> www.caelum.com.br > >>>> _______________________________________________ > >>>> Neo4j mailing list > >>>> [email protected] > >>>> https://lists.neo4j.org/mailman/listinfo/user > >>>> > >>> _______________________________________________ > >>> Neo4j mailing list > >>> [email protected] > >>> https://lists.neo4j.org/mailman/listinfo/user > >>> > >> > >> > >> > >> -- > >> Adriano Almeida > >> Caelum | Ensino e Inovação > >> www.caelum.com.br > >> _______________________________________________ > >> Neo4j mailing list > >> [email protected] > >> https://lists.neo4j.org/mailman/listinfo/user > > > > _______________________________________________ > Neo4j mailing list > [email protected] > https://lists.neo4j.org/mailman/listinfo/user > _______________________________________________ Neo4j mailing list [email protected] https://lists.neo4j.org/mailman/listinfo/user
